Polinaftalin sülfonat esaslı süperakışkanlaştıcıların farklı inceliklere sahip Bayburt Taşı ikame edilmiş kompoze çimentoların mekanik ve fiziksel özelliklerine etkisi

Year 2018, Volume: 24 Issue: 3, 419 - 425, 29.06.2018

İlker Tekin , Duygu Tekin

Abstract

Bu
çalışmada, puzolanik özelliğe sahip 45 µm ve 125 µm incelikte öğütülmüş Bayburt
taşı PÇ 42.5R (CEM I) çimentoda sırasıyla ağırlıkça %0, 10, 20 ve %30 ikame
edilmiştir. Çalışmanın amacı iki aşamada oluşturuldu: birincisi farklı
inceliklere sahip zeolit içeren Bayburt taşı atıklarının CEM I tip çimentoya
ikame edildikten sonra elde edilen çimentonun basınç dayanımı ve fiziksel
özelliklerine etkilerini değerlendirmek, diğeri üretilen çimentoların farklı
firmalara ait aynı tip süperakışkanlaştırıcılarla davranışını incelemektir.
Hazırlanan hamur numuneler üzerinde standart kıvam, priz süreleri ve hacim
sabitliği gibi standart çimento deneyleri, harç numuneler üzerinde yayılma ve
basınç dayanımı deneyleri gerçekleştirilmiştir. Harç numuneler 28 gün standart
küre bırakılmış ve ardından 2, 7 ve 28 gün yaşlarında basınç dayanımı deneyi
yapılmıştır. Sonuç olarak özgül yüzeye bağlı olarak değişen incelik fiziksel,
mekanik ve reolojik özellikleri önemli derecede etkilemiştir. Bu çalışmada
farklı firmalara ait polinaftalin sülfonat tipi süperakışkanlaştırıcıların
beyaz Bayburt taşı ikameli çimentolarda kullanılabileceği belirlenmiştir.

Keywords

Bayburt taşı, Puzolan, Çimento, Süperakışkanlaştırıcı, İncelik

Effect of the polynaphtalene sulfonate based superplasticizer on mechanical and physical properties of blended cement replaced with Bayburt Stone at different fineness

Abstract

In
this study, grinded Bayburt Stone has pozzolanic property with 45 µm and 125 µm
fineness was replaced with PC 42.5R (CEM-I) type cement at ratio of 0%, 10%,
20%, and 30% by weight. The aim of this study was made up in two phase, one of
them was to investigate the effects of Bayburt Stone waste contain zeolite with
different fineness on physical and mechanical properties of composite cements
and the other one was to investigate behavior of same superplasticizer belong
to two different company. Standard consistency, setting time and volume
expansion tests are performed on the cement pastes and compression strength and
flow tests are performed on the cement mortars. Mortar specimens are kept in
standard curing for 28 days, than compressive strength test are performed at
the ages of 2, 7 and 28 days. As a result, changes in specific surface area
depending on the particle size distribution of mineral additives makes
significant different on the physical, mechanical and rheological properties of
cement mortars. In this study, it was determined that same type of
superplasticizers which had different companies could be used in blended cement
replaced with Bayburt stone.

Keywords

Bayburt stone, Pozzolan, Blended cement, Superplasticizer, Fineness

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